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亲美政府不一定长寿，但反美政府一定短命

Source: 上个世纪日本泡沫时代是怎样的一副光景，繁荣到什么程度？能给我们什么启示？ – 知乎

The Origin of Database “Sharding”

The evil wizard Mondain had attempted to gain control over Sosaria by trapping its essence in a crystal. When the Stranger at the end of Ultima I defeated Mondain and shattered the crystal, the crystal shards each held a refracted copy of Sosaria.

Source: Michael Tsai – Blog – The Origin of Database “Sharding”

2020 年一季度 GDP 同比下降 6.8%，意味着什么？

中国政府可能会借此机会清理一些社会债务。正常情况下，国民对于经济下滑的忍受能力是非常低的，但处于重大危机中的时候则例外。

比如二战里发动对外战争作为缓解国内矛盾的手段，实际上如果经济增长够快，国内什么矛盾都能压下去，当国内矛盾较大的时候，经济问题已经比较严重了。然而实际上，以二战为例，战争时期其实所有参战国家的经济情况都不好，看似GDP高，国民生活水平其实是下降了的，至少在战争开始的前期，国内的矛盾反而缓解了，而如果战场上能一路胜利的话，那国民能忍受的时间会更长，完全和国家出现经济问题时的表现相反。

说到底，GDP只是个数字而已，带来的只是国民情绪上的变化，另一方面，国民实际生活中的感受对每个人的影响会更大，所以前些年钱都花在买房上的时候，日常消费扣扣索索的，很多人就吐槽GDP水分高。而到了今年疫情的情况下，谁还关心GDP，更多的是关心疫情还会不会爆发，班还能不能正常上，生意还能不能正常做，只要这些问题解决了，哪怕今年GDP是负的，也没几个人在乎，因为只要疫情过去，明年肯定比今年好。战争里也是类似的情况，大家都相信只要打赢了，就会有好日子过，所以能忍受暂时的苦日子，特别是在战争情况下，国家一般都会考虑提供类似低保的社会保障。

Source: 2020 年一季度 GDP 同比下降 6.8%，意味着什么？会产生什么影响？ – 知乎

Rendering Pipeline Briefly Explained

Simplistically, the GPU takes in a stream of vertices into a vertex function. That vertex function outputs a position. That’s the only really important thing about the vertex function.

The rasteriser takes those positions and fills out triangles in 2d. If you think of that 2d as a grid, then conceptually the triangles cover squares (fragments) in that grid.

The fragment function takes in the fragments and assigns a color to that fragment.

So vertex function is for position, fragment function is for color. Anything else is extra.

Source: Face normal vs vertex normal – Books / Metal by Tutorials – raywenderlich.com Forums

Standard

Source: Standard

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A Colab notebook that introduces differential calculus: derivatives, partial derivatives and gradients

I wrote a Colab notebook that introduces differential calculus: derivatives, partial derivatives and gradients: https://t.co/A2KAmux3B3 pic.twitter.com/0BPq7ndpic

— Aurélien Geron (@aureliengeron) April 19, 2020

a Colab notebook that introduces differential calculus: derivatives, partial derivatives and gradients:

What is reserve tranche position in IMF? – Quora

The reserve tranche position(RTP) is portion of the required quota of currency that each International Monetary Fund (IMF) member country must provide to the IMF that can be utilized for its own purposes without a service fee. The reserve tranche portion of the quota can be accessed by the member nation at any time.

Source: What is reserve tranche position in IMF? – Quora

IMF works like a central bank without a central government.